According to an article by Mitch Holtzer of Cookson Electronics that appeared in SMT Online, tin/silver/copper (SAC) alloys have become the industry standard lead-free solders since RoHS went into effect. Holtzer notes that “technical and economic factors are reducing the silver content in SAC compositions, with disadvantages like slower wetting speeds, and advantages like minimized BGA voids.” He also points out that “solder choices are influenced by the desired results, cost, BOM, and other factors.”
Thanks to embedded electronics, medical devices are getting smaller and smarter than ever. Pacemakers and implantable defibrillators are now able to call physicians. MRIs, CT scanners, and ultrasound machines are gaining mobility. And the venerable Band-Aid may soon be able to detect illnesses ranging from fevers to heart arrhythmias. On February 21, join Design News senior editor Charles Murray for a wide-ranging discussion, "Embedded Angles for Medical Products," which will explore the latest developments in medical electronics. The discussion will examine advances in medical device technology and offer an inside look at the embedded electronics behind it.
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